Portable circular saw



FIG. 1 is a perspective illustration viewed from above and from theright rear of a portable circular saw incorporating our new design;

FIG. 2 is a perspective illustration from above and from the right frontof the portable circular saw of FIG. 1;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof; and

FIG. 7 is a top plan view thereof.

The ornamental design for a portable circular saw, substantially asshown and described.